Skip to main content

Table 5 Effect of Fixed versus Optimal AV Delay on Echo Doppler Parameters at Increased Atrial Pacing Rates

From: Shortening of atrioventricular delay at increased atrial paced heart rates improves diastolic filling and functional class in patients with biventricular pacing

Echo Doppler Variable Δ Fixed vs. Opt AV Delay % Δ P
Diastolic Filling Time (ms) 40.2 ± 25 14 < 0.001
Mitral inflow VTI (cm) 0.92 ± 2 5 0.04
Systolic Ejection Time (ms, n = 13) 11 ± 15 4 0.011
LVOT VTI (cm, n = 13) 0.56 ± 1.6 3 0.21
  1. Values are Mean ± SD or percent change